I've been waiting for a decent FF zoom lens from Sony with more reach at the long end and since such a lens never came out, I recently purchased a Minolta 28-135 from ebay. This is now my main walkaround lens.

I must say I like the lens quite a bit. For best performance it needs to be stopped down a tick but then it can keep up with most modern zoom lenses nicely.

Here a quick comparison with the CZ24-70 (the best that's available?) to get an idea of it's performance.